Floral biology of Baccaurea courtallensis – an endemic tree species from peninsular India
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Abstract
Baccaurea courtallensis, a member of the Phyllanthaceae family is a tree species endemic to peninsular India. Despite the fact that this plant is naturally propagated through seeds, there is no information on its reproductive biology. To understand the reproductive biology of this species, its floral biology is very important. Hence, this study was conducted to comprehend the detailed aspects of its flowering and fruiting characters. Blooms occur during February–May; fruits develop and mature from June to September. Flowers are unisexual, and dioecious. The present study reports on the rare occurrence of monoecious flowers in many inflorescences of a few trees. Crimson red fruits are arranged in a racemose type of inflorescence and hang in symmetric clusters. Inflorescence clusters are observed all along the trunk from base upwards. Wind and insect pollinations were observed in this species during field visits: honey bees and black ants were observed as the major floral visitors. Pollen grains showed 96.24% fertility in the acetocarmine glycerin test and 80% viability in the fluro-chromatic reaction test. Pollen germination was 63.1% in Brewbaker and Kwack’s medium containing 10% sucrose. The detailed aspects of flower and fruit morphology and anatomy respectively are reported for the first time.
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References
Abdelgadir, H.A., S.D. Johnson & J. van Staden (2012). Pollen viability, pollen germination, and pollen tube growth in the biofuel seed crop Jatropha curcas (Euphorbiaceae). South African Journal of Botany 79: 132–139.
Abhishek, R.U., R. Ashwin & T.P. Mahesh (2011). Phytochemical analysis and antibacterial efficacy of fruit rind of Baccaurea courtallensis Müell. Arg. Medicinal Plants 3(4): 327–330.
Balakrishnan, N.P. & T. Chakrabarty (2007). The family euphorbiaceae in India- a synopsis of its profile, taxonomy and bibliography. Bishen Singh Mahendra Pal Singh, Dehra Dun, India 500 pp.
Barni, E., G. Bacaro, S. Falzoi, F. Spanna & C. Siniscalco (2012). Establishing climatic constraints shaping the distribution of alien plant species along the elevation gradient in the Alps. Plant Ecology 213: 757–767.
Bawa K.S. (1983). Patterns of flowering in tropical plants, pp. 395–410. In: Johns and R.J. Little (eds.). Handbook of Experimental Pollination Biology. Von Nostrand Reinhold Company, New York, 558 pp.
Bawa, K.S & F.S. Ng (1990). Plant phenology - a commentary, pp. 17–20. In: Bawa, K.S. & M. Hadley (eds.). Reproductive Ecology of Tropical Forest Plants. UNESCO and Panthenon Publishing Group, London, 421 pp.
Beach, J.H. (1981). Pollinator foraging and the evolution of dioecy. American Naturalist 118: 572–577.
Bhattacharya, K. & B.K. Datta (1992). Anthesis and pollen release: Anthesis and pollen release of some plants of West Bengal, India. Grana 3(1): 67–71.
Bolat, I. & L. Pirlak (1999). Tropical journal of agriculture and forestry. Letters 23: 383–388.
Brewbaker, J.L. & B.H. Kwack (1963). The essential role of calcium ion in pollen germination and pollen tube growth. American journal of Botany 50(9): 859–865.
Corner, E.J.H. (1976). The Seeds of Dicotyledons. Cambridge University Press, Cambridge, 320 pp.
Cruden, R.W. (1977). Pollen-ovule ratios: a conservative indicator of breeding systems in flowering plants. Evolution 31(1): 32–46.
Dafni, A. & D. Firmage (2000). Pollen viability and longevity: Practical, ecological and evolutionary implications. Plant Systematics and Evolution 222: 113–132.
Dafni, A., P.G. Kevan & B.C. Husband (2005). Practical Pollination Biology. Enviroquest Ltd. Cambridge, 590 pp.
Daniel, P., G.V.S. Murthy & P. Venu (2005). The flora of Kerala. Botanical Survey of India. Vol 1, 96 pp.
Fahn, A. & M. Zohary (1955). On the pericarpial structure of the legumen, its evolution and relation to dehiscence. Phytomorphology 5: 99–111.
Gagliardi, K.B., L.A. de Souza & A.L.M. Albiero (2013). Comparative fruit development in some Euphorbiaceae and Phyllanthaceae. Plant Systematics and Evolution 300(5): 775–782.
Heslop-Harrison, J. & Y. Heslop-Harrison (1970). Evaluation of pollen viability by enzymatically induced fluorescence; intracellular hydrolysis of fluorescein diacetate. Stain Technology 45(3): 115–120.
Hine, A., A. Rojas., L. Suarez., O. Murillo & M. Espinoza (2019). Optimization of pollen germination in Tectona grandis (Teak) for breeding programs. Forests 10(10): 908.
Johri, B.M & I.K. Vasil (1961). Physiology of pollen. The Botanical Reviews 27: 325–381.
Kumar, S.M. (2012). Management Strategies for Endemic and Threatened Medicinal Plants in India – A Geoinformatic Approach. Department of Environment, Government of Tamil Nadu, 596 pp.
Liu Y., Y. Zhang., D. He. Cao & H. Zhu (2007). Climatic control of species richness along elevation gradient in the longitudinal range – Groge region. Chinese Science Bulletin 52(2): 50–58.
Lloyd, D.G. & C.J. Webb (1977). Secondary sex characters in plants. The Botanical Review 43: 177–216.
Mauseth, J.D. (1988). Plant Anatomy. Benjamin/Cummings Publ. co., Menlo Park, 578 pp.
Mohan, S. (2009). Fatty Acid Composition of Baccaurea courtallensis Müll. Arg. Seed oil: An Endemic Species of Western Ghats, India. Journal of the American Oil Chemists Society 86(10): 1017–1019.
Munguia-Rosas, M.A., J. Ollerton., V. Parra-Tabla & J.A. De Nova (2011). Meta analysis of phenotypic selection on flowering phenology suggests that early flowering plants are flavored. Ecology letters 14(5): 511–521.
Narasimhan, D. & S.J. Irwin (2021). Flowering plants of Tamil Nadu: A compendium. Care Earth Trust, Chennai, India 1112 pp.
Nazarudhin, A. (2010). Nutritional composition of some lesser-known fruits by the ethnic communities and local folks of Kerala. Indian Journal of Traditional Knowledge 9(2): 398–402.
Oskay, D. (2017). Reproductive biology of the critically endangered endemic plant Erodium somanum in Turkey. Turkish Journal of Botany 41(2): 171–179.
Oskay, D. (2020). Conservation essays and phenology of critically endangered endemic plant Erodium somanum. Celal Bayer University Journal of Science 16(2): 237–243.
Renner, S.S. (2014). The relative and absolute frequencies of angiosperm sexual systems; Dioecy, monoecy, gynodioecy and an updated online database. American Journal of Botany 101(10): 1588–1596.
Roth, I. (1977). Fruits of angiosperms, pp. 557–564. In: Linsbauer K., F.G. Tischler & A. Pascher (eds.). Encyclopedia of Plant Anatomy. Gebruder Borntraeger, Berlin.
Shivanna K.R. & N.S. Rangaswamy (1992). Pollen Biology: a laboratory manual. Springer, Berlin/Heidelberg 119 pp.
Shivanna, K.R. & R. Tandon (2014). Reproductive Ecology of Flowering Plants: A Manual. Springer, New Delhi, 170 pp.
Singh, S.A., P.M. Patel, K.T. Patel, D.R. Delvadia, R.D. Patel, N. Kumar, S. Narayanan & S.R. Fougat (2010). Floral biology and flowering phenology of Jatropha curcas. Journal of Forest Science 26(2): 95–102.
Ssali, R.T., M. Pilley, Rubaihayo & Tushemereirwe (2012). Male fertility in Musa: pollen quality in diploid banana hybrids. Uganda Journal of Agricultural Sciences 13(2): 39–45.
Sulusoglu, M. & A. Cavusoglu (2014). In vitro pollen viability and pollen germination in cherry Laure (Prunus laurocerasus L.). The Scientific World Journal 2014: 7 .
Vaughton, G. & M. Ramsey (1998). Floral display, pollinator visitation and reproductive success in the dioecious perennial herb Wurmbea dioica (Liliaceae). Oecologia 115: 93–101.
Yogeesha, H.S., S. Ganeshan, K.S. Shivashanakara, D.L. Shetty & C. Anilkumar (2016). Fruit/Seed morphology, seed drying and germination studies in Baccaurea courtallensis (Müll.) Arg. Threatened under-utilized fruit species of Western Ghats in India. Journal of Horticulture Science 11(1): 76–79.